Roofing material.



A. J. COHEN.

ROOPING MATERIAL.

APPLICATION FILED. MAY 17, 1907.

. 795450 v Patented. Apr. 6, 1909.

ythe transmission of heat from the tinto the "Nrrnn srngi PA nu eieren.,

ANDREW J. COHEN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO MERCHANT & EVANS COMPANY, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.y

ROOFING MATERIAL.

Specification of Letters Patent.

Patented Aprn e, 1909.

Application iled May 17, 1907. Serial No. 374,216.

To .all whom it may concern.'

Be it known that I, ANDREW J. COHEN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented eertain Improvements in Roofing Materials, of which the following is a specification.

One object of my invention is to providea rooiing material in a form particularly adapted to be used between the wooden sheathing and the tin of a roof, which shall in itself be re and also'water proof in order to-prevent wooden sheathing, as well as to `prevent the rusting of the tin.

Another object of my invention is to provide a roofing material composed on one side of felt paper or other equivalent water proof material, and on the other side of asbestos.

I'further desire to provide a roofing material of the general character above noted with a form of cement for holding together its constituent layers, either with or without an interposed layer of some material capable of generating when heated, a gas such as carbon dioxid, ca able of extinguishing a fire or at least ten ing to retard combustion.

These and other advantageous endsI attain as hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1, is' a vertical section of a body. ofV roofing, illustrating my invention as appliedthereto; Fig. 2, is a vertical section on an enlarged scale, of the sim lest form of my improved rooiing materia Fig. 3, is a vertical section also on an enlarged scale illustrating a form of roofing material in which a layer ofgas generating material is placed between the two main layers of the sheet.

In the above drawings A represents the wooden sheathing of a roof having a covering sheet B of tin. Between these two is placed a layer C of my improved rooiing material which consists of a sheet of felt paper c and a sheet c/ of asbestos united, so as to constitute in eifect a single sheet, by means of a body of adhesive material c2, such as silicate of soda. While this latter substance is preferably employed by Ine,- as the eementing material, it will be understood that other adhesives may be used without departing from my invention; it being essential that the felt and asbestos sheets or their equival described.

lents be so combined that they may be .sold and used as a single sheet.

In use, the sheet C is spread upon the sheathing of the roof with its asbestos face down, the tin being therefore spreadover the roof with its face in contact w1th the felt paper portion of the sheet C. As a result, the under side of the tin is kept dry, for the felt paper is water proof and does not absorb or o d water of condensation, while in addition, it is of such a nature and composition as to constitute what .is known as slow buming.material. If the cementing material employed be silicate of soda, this of itself adds to the iire resisting qualities of the structure and with the asbestos sheet very efectually revents the transmission of the heat from t e tin roof to the wooden sheathmg.v

In some forms of my invention, I may p rovide between the portions c and c of the sheet a body of some chemi'cal substance, such as sal soda, as indicated at c3 in `Fig. 3, which when heated will generate a gas of a nature capable of extinguishing a fire. In such case, this substance would preferably be mixed with'the adhesive material, and the composite sheets C having itV between their felt and asbestos layers are subjected to' heavy pressure, as is also done with the layers of the sheet C-shown in Fig. 2; so that the resulting structure consists of a single lsheetl capable of being handled and used as such. In the event of a piece of heated or burning material falli'lry upon a roof having such a sheet as that illustrated at C interposed between the tin and the wooden sheathing, a possible lire starting in the .sheathing by reason` of heat transmitted would be extinguished by the vgas generated from the layer c3. S'uoh gas would also tend to revent the cha-rung or combustion of the fe t paper c.

I claim as my invention:

1 A roofing material, consisting of a single sheet composed of two la'yers'having adhesive material for holding together, one of said layers being composed of asbestos and the other of felt paper, substantially las described.

2.1 A roofing material consisting of a sheet of .felt paper and a sheet of asbestos held together by silicate of soda, substantially as 3., As a new article of manufacture, aroofing material consisting of two layers of sheet material having between them a layer of sal soda, with an adhesive for holding together said two layers substantially as described.

4. As a new article of manufacture, a roofing material consisting of two layers of sheet materialy having between them: a chemical substance capable of generating, when heati ed, a gas incapable of sup orting combustion, substantially as descri ed.

5. A roofing material consisting' of a sheet of water proof material, a sheet of fire proof material, with a substance between said sheets capable of generation, when heated, of

a gas incapable of suppo'rtingcombustion,

with means for holding said sheets together to form a unitary structure, substantially as4 of roofing material containing a vsubstance capable of generating when heated, a gas-incapable of supporting combustion, substam.

tially as described.

In testimony whereof, I have signed my name t0 this specification, in the presence of two subscribing witnesses.

ANDREW J. COHEN.

Witnesses:

WM. E. SHUPE, Jos. H; KLEIN.- 

